DE68922079D1 - Electronic wake-up signal generator. - Google Patents
Electronic wake-up signal generator.Info
- Publication number
- DE68922079D1 DE68922079D1 DE68922079T DE68922079T DE68922079D1 DE 68922079 D1 DE68922079 D1 DE 68922079D1 DE 68922079 T DE68922079 T DE 68922079T DE 68922079 T DE68922079 T DE 68922079T DE 68922079 D1 DE68922079 D1 DE 68922079D1
- Authority
- DE
- Germany
- Prior art keywords
- signal generator
- wake
- electronic
- electronic wake
- generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33584—Bidirectional converters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/023—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone by reversing the polarity of the current at the exchange
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Devices For Supply Of Signal Current (AREA)
- Inverter Devices (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/288,328 US4866587A (en) | 1988-12-22 | 1988-12-22 | Electronic ringing signal generator |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68922079D1 true DE68922079D1 (en) | 1995-05-11 |
DE68922079T2 DE68922079T2 (en) | 1995-10-26 |
Family
ID=23106636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68922079T Expired - Fee Related DE68922079T2 (en) | 1988-12-22 | 1989-12-12 | Electronic wake-up signal generator. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4866587A (en) |
EP (1) | EP0375250B1 (en) |
JP (1) | JPH02190068A (en) |
DE (1) | DE68922079T2 (en) |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5091934A (en) * | 1989-04-10 | 1992-02-25 | Sharp Kabushiki Kaisha | Tone modification system for telephone system with clock |
EP0494629B1 (en) * | 1991-01-08 | 1997-08-20 | Canon Kabushiki Kaisha | Electric power source |
US5109326A (en) * | 1991-01-10 | 1992-04-28 | Unisys Corporation | High efficiency power converting cell, and versatile system of same |
DE4104809A1 (en) * | 1991-02-16 | 1992-08-20 | Kommunikations Elektronik | CIRCUIT ARRANGEMENT FOR GENERATING AN AC VOLTAGE |
FR2674385A1 (en) * | 1991-03-22 | 1992-09-25 | Alsthom Gec | GALVANIC ISOLATION DEVICE FOR CONTINUOUS ELECTRIC SIGNALS OR LIKELY TO CONTAIN A CONTINUOUS COMPONENT. |
US5237606A (en) * | 1991-05-01 | 1993-08-17 | Charles Industries, Ltd. | Enhanced synchronous rectifier |
CA2101842A1 (en) * | 1991-12-02 | 1993-06-03 | Richard W. Faith | Telephone ringing signal generator |
US5307407A (en) * | 1991-12-19 | 1994-04-26 | Nec America, Inc. | 20 Hz ring generator using high frequency PWM control |
US5537029A (en) | 1992-02-21 | 1996-07-16 | Abb Power T&D Company Inc. | Method and apparatus for electronic meter testing |
US5457621A (en) | 1992-02-21 | 1995-10-10 | Abb Power T&D Company Inc. | Switching power supply having voltage blocking clamp |
US5481178A (en) | 1993-03-23 | 1996-01-02 | Linear Technology Corporation | Control circuit and method for maintaining high efficiency over broad current ranges in a switching regulator circuit |
US5594629A (en) * | 1994-06-20 | 1997-01-14 | General Electric Company | High-frequency switching circuits operable in a natural zero-voltage switching mode |
JPH08107683A (en) * | 1994-10-03 | 1996-04-23 | Mitsubishi Electric Corp | Drive controller of motor and insulation type bidirectional dc voltage converting circuit |
US5490054A (en) * | 1994-10-05 | 1996-02-06 | Ferro Magnetics Corporation | Ringing generator and method for converting DC to AC having continuously adjustable amplitude |
FR2729515B1 (en) * | 1995-01-13 | 1997-04-18 | Sextant Avionique | BIDIRECTIONAL CONTINUOUS-CONTINUOUS VOLTAGE CONVERTERS AND CURRENT SENSOR |
JPH09215319A (en) * | 1996-02-01 | 1997-08-15 | Toyota Autom Loom Works Ltd | Dc-dc converter |
AU716232B2 (en) * | 1996-04-26 | 2000-02-24 | Alcatel Australia Limited | Switchable isolating capacitor |
WO1998018013A2 (en) | 1996-10-22 | 1998-04-30 | Abb Power T & D Company Inc. | Energy meter with power quality monitoring and diagnostic systems |
GB9626827D0 (en) * | 1996-12-24 | 1997-02-12 | Lyons Claude Ltd | Apparatus and method for supplying an AC signal to a device |
US5912552A (en) * | 1997-02-12 | 1999-06-15 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | DC to DC converter with high efficiency for light loads |
JPH10313572A (en) * | 1997-05-09 | 1998-11-24 | Toyota Autom Loom Works Ltd | Switching regulator control system |
US5903448A (en) * | 1997-08-20 | 1999-05-11 | Lucent Technologies Inc. | Four quadrant flyback converter, method of operation thereof and power plant employing the same |
US6307356B1 (en) | 1998-06-18 | 2001-10-23 | Linear Technology Corporation | Voltage mode feedback burst mode circuit |
US6025999A (en) * | 1998-11-12 | 2000-02-15 | Lucent Technologies Inc. | Dual output power supply and method of operation thereof |
US6127815A (en) * | 1999-03-01 | 2000-10-03 | Linear Technology Corp. | Circuit and method for reducing quiescent current in a switching regulator |
IL131117A0 (en) * | 1999-07-26 | 2001-01-28 | Eci Telecom Ltd | Sine wave generator suitable for ringer |
US6674274B2 (en) | 2001-02-08 | 2004-01-06 | Linear Technology Corporation | Multiple phase switching regulators with stage shedding |
US6476589B2 (en) * | 2001-04-06 | 2002-11-05 | Linear Technology Corporation | Circuits and methods for synchronizing non-constant frequency switching regulators with a phase locked loop |
CN1153331C (en) * | 2002-02-01 | 2004-06-09 | 艾默生网络能源有限公司 | Power factor corrector for UPS |
WO2003088460A2 (en) * | 2002-04-12 | 2003-10-23 | Delta Energy Systems (Switzerland) Ag | Soft switching high efficiency flyback converter |
US7019507B1 (en) | 2003-11-26 | 2006-03-28 | Linear Technology Corporation | Methods and circuits for programmable current limit protection |
US7030596B1 (en) | 2003-12-03 | 2006-04-18 | Linear Technology Corporation | Methods and circuits for programmable automatic burst mode control using average output current |
US7227350B2 (en) | 2004-03-18 | 2007-06-05 | Elster Electricity, Llc | Bias technique for electric utility meter |
US7315162B2 (en) | 2004-03-18 | 2008-01-01 | Elster Electricity, Llc | Reducing power consumption of electrical meters |
TWI263396B (en) * | 2004-04-19 | 2006-10-01 | Benq Corp | Switching power converter |
US7355867B2 (en) | 2004-08-17 | 2008-04-08 | Elster Electricity, Llc | Power supply for an electric meter having a high-voltage regulator that limits the voltage applied to certain components below the normal operating input voltage |
US7786709B2 (en) * | 2006-08-25 | 2010-08-31 | Lawson Labs, Inc. | Bi-polar bi-directional energy balancing power-conversion engine |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3986097A (en) * | 1975-06-30 | 1976-10-12 | Bell Telephone Laboratories, Incorporated | Bilateral direct current converters |
US4015091A (en) * | 1975-12-05 | 1977-03-29 | Bell Telephone Laboratories, Incorporated | Telephone ringing generators |
US4056693A (en) * | 1975-12-05 | 1977-11-01 | Bell Telephone Laboratories, Incorporated | Voltage and current controlled converter for telephone ringing |
US4189764A (en) * | 1978-09-26 | 1980-02-19 | Snyder Donald W | Current controlled inverter |
CA1114536A (en) * | 1978-12-11 | 1981-12-15 | William B. Kiss | Ringing generator |
EP0013332A1 (en) * | 1979-01-16 | 1980-07-23 | Siemens-Albis Aktiengesellschaft | Chopper circuit |
US4257087A (en) * | 1979-04-02 | 1981-03-17 | California Institute Of Technology | DC-to-DC switching converter with zero input and output current ripple and integrated magnetics circuits |
US4395675A (en) * | 1981-10-22 | 1983-07-26 | Bell Telephone Laboratories, Incorporated | Transformerless noninverting buck boost switching regulator |
-
1988
- 1988-12-22 US US07/288,328 patent/US4866587A/en not_active Expired - Lifetime
-
1989
- 1989-11-17 JP JP1297796A patent/JPH02190068A/en active Pending
- 1989-12-12 EP EP89312975A patent/EP0375250B1/en not_active Expired - Lifetime
- 1989-12-12 DE DE68922079T patent/DE68922079T2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE68922079T2 (en) | 1995-10-26 |
EP0375250B1 (en) | 1995-04-05 |
EP0375250A2 (en) | 1990-06-27 |
EP0375250A3 (en) | 1991-01-09 |
US4866587A (en) | 1989-09-12 |
JPH02190068A (en) | 1990-07-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |